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<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>

    <body>
        <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
        <script>
            //   try {
            //     console.log(msg)
            //   } catch (err) {
            //     console.log(err)
            //   }
            //   console.log('44')

            // try-catch 让我们的js代码更加健壮，不会影响后续代码的执行
            async function xxx() {
                try {
                    const res = await axios({
                        url: 'http://ajax-api.itheima.net/api/books/999',
                    })
                    console.log(res)
                } catch (err) {
                    console.log('err333', err)
                }

                console.log(666)
            }
            xxx()
        </script>
    </body>
</body>

</html>